Unknown at-rule Web Standard

Description

Unrecognized at-rule.

Help

The at-rule name may be misspelled or not yet standardized.

Applicable standards

• CSS Validation

Change history

• 5.28 Dec 2017 Added.

This page describes a web site issue detected by SortSite Desktop and OnDemand Suite.

Rule ID: W3cCssUnknownAtRule